Bergara Premier Series, Barreled Action, 300 Winchester Magnum, 26″ Barrel, 416 Stainless Steel, Silver

Product Description

The Bergara BBL Action #5.5 in 300 Win Mag represents the fastest, smartest path to a custom-grade precision rifle without waiting months or paying custom-build prices. This is a pre-fitted barreled action—Bergara’s world-class Premier-grade barrel already married to a B-14 action and headspaced—ready to drop into any Remington 700 pattern stock or chassis you choose. You get Bergara’s sub-MOA accuracy guarantee, a crisp adjustable trigger, and complete control over the final platform.

Specifications

What Makes the Bergara Barreled Action Different

• Pre-fitted and headspaced: No guesswork, no gunsmith required—Bergara’s barrel is already married to the B-14 action and ready to shoot the moment you install it in your chosen stock.
• Bergara’s sub-MOA accuracy guarantee: Every barreled action leaves the shop tested and backed by the same guarantee that protects Bergara’s complete rifles.
• Infinite platform flexibility: The B-14’s Remington 700 footprint gives you access to the largest aftermarket ecosystem in bolt-action history—thousands of stocks, chassis, triggers, and scope mounts.
• Cost and time savings: Eliminates the 8–16 week wait and $500+ labor cost of a custom barrel fitting. You get custom-quality accuracy at production rifle pricing.
• Crisp, adjustable trigger: The Bergara Performance Trigger is factory-set to 3–3.5 lbs and adjustable down to 2 lbs or up to 4 lbs with an Allen key—no gunsmith needed.
• 300 Win Mag power in a 26″ platform: The 26″ barrel maximizes velocity and energy retention for long-range hunting, competition, and precision shooting where magnum cartridges shine.

Why 300 Winchester Magnum?

The 300 Win Mag is one of the most versatile and proven magnum cartridges in the world. A 26″ barrel optimizes the cartridge’s velocity—typically 2,950–3,100 fps with premium factory loads—delivering the energy needed for elk, moose, and large-frame game at distance. In competition and precision rifle formats, it offers a flat trajectory and wind-resistant performance that makes it a go-to choice for long-range shooters. If you’re building a dedicated magnum platform, this barreled action gives you the foundation to do it right.

The Bergara Barrel Story

Bergara has spent decades manufacturing precision barrels for some of the world’s finest firearms makers. Their 5-step barrel process—straightening, deep-hole drilling, three-spindle diamond honing to a mirror finish, button rifling with carbide buttons held to less than .0002″ groove diameter deviation, and high-temperature stress relieving—yields barrels that perform like hand-lapped customs at a fraction of the cost. The Premier Series barrels used in this action are assembled in Lawrenceville, GA by a team that includes former USMC Precision Weapons Section alumni who built rifles for Marines in combat and competition. That heritage is built into every barrel.

The B-14 Action: Built for Precision and Compatibility

The B-14 action shares the Remington 700 footprint but improves on the original design in key ways. A two-lug system with a coned bolt nose ensures smooth, reliable feeding. A stronger bolt stop handles magnum pressures without fatigue. A threaded oversized bolt knob comes standard, giving you ergonomic options and the ability to add tactical knobs or night vision mounts. Most importantly, every Remington 700 pattern stock, chassis, trigger, mount, and accessory ever made will fit—an ecosystem that spans 50+ years and thousands of options. If you want to customize your rifle down to the millimeter, the B-14 footprint gives you that freedom.

Building Your Rifle: What You’ll Need

A barreled action is the heart of a precision rifle, but you’ll need to choose the other components to complete it. You’ll select a Remington 700 pattern stock or chassis (rigid aluminum chassis are popular for precision shooting; traditional stocks offer classic aesthetics and lower weight). You’ll choose bottom metal and magazine type based on your caliber and intended use. You may add a scope mount if your chassis doesn’t include one. Your local gunsmith or FFL can handle the final assembly and headspace verification, or if you’re experienced, you can do much of it yourself. The modular approach means you build the rifle you actually want.

Why Buy from Western Sport

Western Sport has been an FFL/SOT dealer in Roanoke, TX—just north of Fort Worth—since 2007. Our staff shoots the same rifles we sell, and we understand what it takes to build a precision rifle that performs. If you have questions about barrel length, caliber selection, stock compatibility, or how to complete your barreled action build, call us at 817-393-4000. We’re here to help.

Frequently Asked Questions

Does this barreled action come with a trigger?

Yes. The Bergara Performance Trigger is pre-installed and factory-set to approximately 3–3.5 lbs. It’s adjustable from 2 to 4 lbs using an Allen key—no gunsmith required. Most reviewers call it crisp and comparable to aftermarket upgrade triggers costing $100+.

What stock or chassis should I pair with the 300 Win Mag barreled action?

Any Remington 700 pattern stock or chassis will work. For precision rifle competition (PRS, ELR), aluminum chassis from MDT, XLR, or Manners are popular. For hunting, traditional wood or composite stocks from Manners or McMillan offer weight savings and ergonomics. For benchrest and long-range target work, a rigid chassis maximizes repeatability. Your choice depends on your use case and preference.

Is the headspacing already done?

Yes. Bergara pre-fits and headspaces every barreled action before it ships. Your gunsmith can verify headspace when installing it in your chosen stock, but you won’t need a barrel fitting—the barrel is already a precision fit to the action.

What magazines will work with this barreled action?

Magazine compatibility depends on the bottom metal and magazine well you choose for your stock or chassis. Since this is a magnum action, you’ll want magazines designed for belted magnum cartridges (300 Win Mag). Popular options include Accuracy International, MDT, and Bergara proprietary magazines. Check your chassis or stock documentation for compatibility.

Can I swap calibers later?

No. The barrel is married to the action in a specific caliber. If you want to shoot a different caliber, you would need a different barreled action. However, Bergara offers this barreled action in multiple calibers, so you can build multiple platforms if needed.

What’s included in the box?

The barreled action itself—the B-14 action, Bergara Premier barrel, and Bergara Performance Trigger pre-installed. You will need to source a Remington 700 pattern stock or chassis, bottom metal, magazine, scope mount (if not included with your chassis), and have a gunsmith or experienced builder complete the assembly.

Additional information